No mobile data on oreo roms - Xiaomi Redmi 3s Questions & Answers

Hi! I cant get mobile data with any oreo rom. It works perfectly with nougat and MM, but on Oreo, it doesn't.
I've already done:
Clean flash with several Oreo roms.
latest firmware
APN settings are correct

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VoLte issue xt1562

Am facing voLte issue since from very beginning its not working on my XT1562 lux till now.
Details :-
I root my cell phone before voLte official update so I can't get it officially after that I Flashed many roms voLte enabled ie: spectrum, DU etc but its not useful.
I am in latest TWRP Andy recently flashed latest "DU" weekly but still voLte not working on me ( it's working on my frnds mobile)
What should I do??
Your support will appreciated
Thanks in advance
First flash latest stock ROM which supports volte
Then re install twrp and then any ROM which supports volte it will surly work
Sent from my XT1562 using Tapatalk
Need Help
manan001 said:
First flash latest stock ROM which supports volte
Then re install twrp and then any ROM which supports volte it will surly work
Sent from my XT1562 using Tapatalk
Click to expand...
Click to collapse
I just downloaded voLte OTA Update for XT1562
OTA Update can be applied ONLY on Android 6.0.1 Build MPD24.61.52 OR MPD24.107-52/38 and will be updated to Android 6.01 Build MPD24.107-70/51.
Do you have any link for that??
Stock rom with stock recovery??
Thank you for help

What guide , rom should i use for A2017G Europe (IT)?

Hi everyone
I bought ZTE Axon 7 (A2017G) from Italy Amazon
it is running MM 6.0.1 (Mifavor 4.0 version B11)
there is no OTA updating
so I want to manual update to Nougat last version for my region
then getting TWRP, Magisk, Xposed
but there's alot of guides here with a lot of roms with deference regions confuse me!
so what guide should I use, and what rom should I use
is there need to unlock bootloader , is that will losing me any feature like dolby ?
am2006 said:
Hi everyone
I bought ZTE Axon 7 (A2017G) from Italy Amazon
it is running MM 6.0.1 (Mifavor 4.0 version B11)
there is no OTA updating
so I want to manual update to Nougat last version for my region
then getting TWRP, Magisk, Xposed
but there's alot of guides here with a lot of roms with deference regions confuse me!
so what guide should I use, and what rom should I use
is there need to unlock bootloader , is that will losing me any feature like dolby ?
Click to expand...
Click to collapse
The guide from Controllerboy works perfect ( advice read it more than once ) , the axontoolkit works too.
If you decide to go with custom rom you will loose ZTE Dolby,
but viper works good, but there are debloated stock roms which you can use with Dolby and root.
Unlocking the bootloader is always helpful, if you decide to use custom recovery and root, because if you mess up anything you're mostly lost with a locked bootloader.
Unlocking the bootloader will completely wipe your phone, better you copy your important stuff to PC.
If you just want to update your phone copy the latest official
firmware to the external SD card and use the update function.
coremania said:
The guide from Controllerboy works perfect ( advice read it more than once ) , the axontoolkit works too.
If you decide to go with custom rom you will loose ZTE Dolby,
but viper works good, but there are debloated stock roms which you can use with Dolby and root.
Unlocking the bootloader is always helpful, if you decide to use custom recovery and root, because if you mess up anything you're mostly lost with a locked bootloader.
Unlocking the bootloader will completely wipe your phone, better you copy your important stuff to PC.
If you just want to update your phone copy the latest official
firmware to the external SD card and use the update function.
Click to expand...
Click to collapse
thanx, I red it, but it's said i must be on MM B10 at most, and I am on MM B11, also there is no guide for downgrade, also there is no guide for upgrade , in present, I just want to try stock rom on last Nougat version with twrp, magisk & xposed, so Am I need to unlock bootloader on MM 1st?, or I can upgrade to N then doing all of it?
am2006 said:
thanx, I red it, but it's said i must be on MM B10 at most, and I am on MM B11, also there is no guide for downgrade, also there is no guide for upgrade , in present, I just want to try stock rom on last Nougat version with twrp, magisk & xposed, so Am I need to unlock bootloader on MM 1st?, or I can upgrade to N then doing all of it?
Click to expand...
Click to collapse
This is a bit outdated, you can follow the guide on mm or n, doesn't matter. No need to down or upgrade before.
---------- Post added at 18:55 ---------- Previous post was at 18:49 ----------
After you did the unlock, the twrp update and flashed the Los thread bootloader + modem you can use this rom, guess this is what you want:
https://forum.xda-developers.com/axon-7/development/rom-slim-version-t3669355
coremania said:
This is a bit outdated, you can follow the guide on mm or n, doesn't matter. No need to down or upgrade before.
Click to expand...
Click to collapse
OK, but which last Nougat version for my region?, which rom can I use
am2006 said:
OK, but which last Nougat version for my region?, which rom can I use
Click to expand...
Click to collapse
Linked in last post
@am2006 it seem strange that you don't receive OTA update. It is seem that the seller had done something with the phone (properly install A2017G on A2017 chinese model). Before doing anything, you must know you model, cause A2017G brick is pretty hard to fix
tamahouse02 said:
@am2006 it seem strange that you don't receive OTA update. It is seem that the seller had done something with the phone (properly install A2017G on A2017 chinese model). Before doing anything, you must know you model, cause A2017G brick is pretty hard to fix
Click to expand...
Click to collapse
No I think the last update in Italy is MM, but I'm not sure, the device is new and I check the model and SN on the mobile and its cartoon, it is matching
am2006 said:
No I think the last update in Italy is MM, but I'm not sure, the device is new and I check the model and SN on the mobile and its cartoon, it is matching
Click to expand...
Click to collapse
I recommend using stock Nougat. Stock ROM has pretty good camera, Dolby, DAC which you will missing when using custom ROM. (Stock MM is bit crappy, ZTE has fix a lot after several update).
Beside, RR is very good custom ROM.
Official Xposed does not support Nougat yet, there is an unofficial one but not work with stock Nougat, I haven't try on RR
tamahouse said:
I recommend using stock Nougat. Stock ROM has pretty good camera, Dolby, DAC which you will missing when using custom ROM. (Stock MM is bit crappy, ZTE has fix a lot after several update).
Beside, RR is very good custom ROM.
Official Xposed does not support Nougat yet, there is an unofficial one but not work with stock Nougat, I haven't try on RR
Click to expand...
Click to collapse
thanx, what about LineageOS, is it support Dolby, magisk?
am2006 said:
thanx, what about LineageOS, is it support Dolby, magisk?
Click to expand...
Click to collapse
There are multiple iterations of Dolby made as a Magisk module. Magisk works perfectly on both LineageOS and Stock rom.

G950U1 Oreo to Nougat Possible?

Is it possible to flash back to Nougat from the Oreo beta on the US S8?. I've tried searching but I could only find information on the international version.
Follow the SMG950U instructions. Basically getting BLQ1 nougat flashed on the phone and then getting the update.zip for CRB8 and applying that in the Vol UP+Bixby+PWR boot.
qwww456 said:
Is it possible to flash back to Nougat from the Oreo beta on the US S8?. I've tried searching but I could only find information on the international version.
Click to expand...
Click to collapse
Connect to pc with smart switch and it will give a downgrade option. At least it does for mine...

EEA 10.3.30 to 10.3.2.0 = anti rollback brick?

Hello.
Hope you can help because I'm kinda confused atm
My device is redmi note 7 lavender, came stock with EEA (european global) rom.
I recently unlocked the bootloader, installed twrp, tried a few roms (xiaomi.eu, crdroid, phh-treble gsi, etc). Currently using crdroid without issues.
Previous to all this I was using stock EEA 10.3.2.0 firmware and then sideloaded ota for 10.3.3.0.
According to this post this phone has ARB
What I'm wondering is if I were to go back to stock firmware, would I brick my device? Because the only available fastboot version for EEA is 10.3.2.0 which is older I guess, but I'm not sure exactly how ARB works and it that would trigger it.
Thanks in advance
I recommend that you do not return to the previous version, sometimes the ota bring changes in the bootloader, and you can leave it hardbrick as it happened with several Motorola, even with devices that have a Qualcom processor. Expect that someone else has done it or that the software is released to an equal version.
start to investigate the changes that were added
I leave this link you fence to interest move from the EEA to the global version
https://forum.xda-developers.com/redmi-note-7/how-to/stable-rom-eea-to-global-stable-t3937896
ianxblog said:
Hello.
Hope you can help because I'm kinda confused atm
My device is redmi note 7 lavender, came stock with EEA (european global) rom.
I recently unlocked the bootloader, installed twrp, tried a few roms (xiaomi.eu, crdroid, phh-treble gsi, etc). Currently using crdroid without issues.
Previous to all this I was using stock EEA 10.3.2.0 firmware and then sideloaded ota for 10.3.3.0.
According to this post this phone has ARB
What I'm wondering is if I were to go back to stock firmware, would I brick my device? Because the only available fastboot version for EEA is 10.3.2.0 which is older I guess, but I'm not sure exactly how ARB works and it that would trigger it.
Thanks in advance
Click to expand...
Click to collapse
If you're asking specifically about turning back from 10.3.3 to 10.3.2, then there is no problem (I went from 10.3.3 to 10.3.2 to 10.3.3 again and everything is ok).
thunderteaser said:
If you're asking specifically about turning back from 10.3.3 to 10.3.2, then there is no problem (I went from 10.3.3 to 10.3.2 to 10.3.3 again and everything is ok).
Click to expand...
Click to collapse
My RN7 is global, came with 10.2.3.0 as stock, I updated via OTA to 10.3.5.0, and I was wondering if I try rolling back to 10.2.7.0 (As I didn't find any rom of 10.2.3.0 for global PFGMIXM) it will trigger the ARB? thanks in advance (both have lvl 4 in adb query)
Don't. Just bricked my phone.
fox_xda2 said:
Don't. Just bricked my phone.
Click to expand...
Click to collapse
Sorry to bother but, did you bricked going from which-to-rom, using TWRP or the mi-flashtool?
BlackGarnett said:
Sorry to bother but, did you bricked going from which-to-rom, using TWRP or the mi-flashtool?
Click to expand...
Click to collapse
Rolling back firmware only through twrp, trying to get previous drivers for international version which bug less on proximity sensor.
As the phone is unlocked I might have found a way to restore from brick without physically opening the phone. Will keep you updated.
Edit/Update: yipeee!!
Need to completely flash the phone based on the procedure detailed here. And reflash whatever custom ROM afterwards as you get back to stock.
Just rolled back from Global 10.3.5.0 to 10.2.7.0 with MI Flash Tool (fastboot rom type). 0 problems, seems you can rollback from your MIUI 10 ROMS of the same version(EEA with EEA, Global with Global, etc, and of course that these roms have same ARB 4), at least worked for me, posting this future records.
Actually firmware tool (as opposed to twrp) is the way I reset ARB.

Samsung T580 downgrade android Q to nougat or pie?

Hello, my tablet was a UK version with Chinese firmware (latest 2021) I tried to return it to BTU without suceess. It wouldn't let me flash other firmware after this except TWRP somehow but with a special app that unlocked the bootloader option.
The only Rom it would accept after flashing twrp was lineage 18.1 (I wanted arm64).
Now I have a bunch of apps that don't work with lineage 18.1 (boat beacon and AIS apps) and I would like to go back to a nougat, oreo or pie firmware.
I know there are some restrictions with sofware rev check etcetera when trying to downgrade from a later modem.
Is there a way round it??
Thanks in advance

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